Question

5a-(-2a+3)=-[2a-(-a+3)] ashudenme pls

Answer 1

5a-(-2a+3)=-(2a-(-a+3)

5a+2a-3=-(2a+a-3)

7a-3=-2a-a+3

7a-3=-3a+3

7a+3a=3+3

10a=6

a=6/10

$a = \frac{3}{5}$

Verificando:

5a-(-2a+3)=-(2a-(-a+3)

5(3/5)-(-2(3/5)+3)=-(2(3/5)-(-(3/5)+3)

3-(-6/5+3)=-(6/5-(-3+15/5)

3-(-6+15/5)=-(6/5-(12/5)

3-9/5=-(6/5-12/5)

15-9/5=-(-6/5)

$\frac{6}{5} = \frac{6}{5}$